Home / 311,905.80-467,858.70-288,286.20

Finding the Fourth Proportional to 311,905.80, 467,858.70 and 288,286.20

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Solution

The fourth proportional to 311,905.80, 467,858.70 and 288,286.20 is: 432,429.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,905.80 : 467,858.70 = 288,286.20 : x
  2. Step 2: Convert to fraction form
    311,905.80/467,858.70 = 288,286.20/x
  3. Step 3: Cross multiply
    311,905.80x = 467,858.70 × 288,286.20
  4. Step 4: Simplify right side
    311,905.80x = 134,877,206,759.94
  5. Step 5: Solve for x
    x = 134,877,206,759.94/311,905.80
  6. Step 6: Final answer
    x = 432,429.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.